题目内容

In the compound of xenon tetrafluoride, what’s the electron geometry? ( )

A. tetrahedral
B. square pyramidal
C. square planar
D. octahedral

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In the compound of xenon tetrafluoride, what’s the molecular geometry? ( )

A. tetrahedral
B. square pyramidal
C. square planar
D. octahedral

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Which statement describes a chemical property? ( )

Alkali metals can never be found free in nature
B. The rock is hard
C. Water boils at 100 oC
D. Phosphorus dissolves in carbon disulfide

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Which one is the molecular compound? ( )

A. NaBr
B. (NH4)2SO4
C. O2
D. NO

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The isotopic composition of naturally occurring boron includes boron-10 and boron-11. Which statement is correct? ( )

A. There is much more boron-10 than boron-11
B. There is slightly more boron-10 than boron-11
C. The boron-10 and boron-11 are almost equal
D. There is much less boron-10 than boron-11

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In the compound of xenon tetrafluoride, what’s the electron geometry? ( )

A. tetrahedral B. square pyramidal C. square planar D. octahedral

In the compound of xenon tetrafluoride, what’s the molecular geometry? ( )

Which statement describes a chemical property? ( )

Which one is the molecular compound? ( )

The isotopic composition of naturally occurring boron includes boron-10 and boron-11. Which statement is correct? ( )

A. tetrahedral
B. square pyramidal
C. square planar
D. octahedral